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COM1-IRQ 4, memory addresses 03F8-03FF
COM2-IRQ 3, memory addresses 02F8-02FF
COM3-IRQ 4, memory addresses 03E8-03EF
COM4-IRQ 3, memory addresses 02E8-02EF
pg. 396
Dustin Marks
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What system resources does COM3 use?
well COM1, COM2, COM3, and COM4 are sometimes configured as Serial Ports.
What Serial ports on a computer can be configured as?
com1,com2 com3
What is com1 com2 com3 and com4?
The "com" ports are computer, serical communications ports (normally RS-232).
What are com1 com2 and com3?
COM1 and COM2 originally referred to the serial port interfaces on a PC. Now they can refer to any port, virtual or physical.
Why might you have a resource sharing problem if you install a serial port on both COM2 and COM4?
COM2 and COM4 use the same interrupt by default (IRQ3). The same is also true for COM1 and COM3 (IRQ4).
Which port names and resources are assigned to most PCs?
COM1 is assigned 3F8h and uses IRQ Channel 4, COM2 is assigned 2F8h and uses IRQ Channel 3, COM3 is assigned 3E8h and uses IRQ Channel 4
Which of these symbols is not allowed in a volume label?
CON, PRN, AUX, CLOCK$, NUL COM0, COM1, COM2, COM3, COM4, COM5, COM6, COM7, COM8, COM9 LPT0, LPT1, LPT2, LPT3, LPT4, LPT5, LPT6, LPT7, LPT8, and LPT9.
What is a correct default combination of com ports and irq for a typical ibm compatible computer?
COM1 and COM3, IRQ4
Which is a correct default combination of COM ports and IRQ?
Hi, correct combination of default combination of COM ports and IRQ is given below: 1. com1 and com3 - IRQ4 2. com2 and com4 - IRQ3 below link can easily explain the answer in details. You can even see this in device manager properties. i.e. mycomputer > properties > device manager> IDE/ATA controller > resources > irq=20 link : http://www.webopedia.com/quick_ref/IRQnumbers.asp
When using Microsoft Excel what kind of characters can you use in your file name?
Any characters you can use in any other file name (no / \ ? % * : | " < >). You may not name the file CON, PRN, AUX, CLOCK$, NUL COM0, COM1, COM2, COM3, COM4, COM5, COM6, COM7, COM8, COM9 LPT0, LPT1, LPT2, LPT3, LPT4, LPT5, LPT6, LPT7, LPT8, or LPT9. All restricted characters and names are reserved for other purposes.
What is the maximum number of serial ports for Windows XP?
There's no limit to the number of serial ports. The maximum number for the traditional ports is 2 (COM1/COM3 and COM2/COM4). Plus you can attach additional serial port adapters to a USB port, up to 127 per controller.
What is the common IRQ setting for COM3?
4
